Dryers are normally used for all possible kinds of yarn  in different fiber composition, yarn package type and size. Yarns can be cotton , acrylic , wool , polyester , rayon and blands. In forms of packages  (cylindirical , conical, biconical, compressible),

DRYING PROCESS CONSISTS OF 3 SEQUENCES ;

1 – HYDROEXTRACTION: replaces centrifugal operation and is done directly after loading of wet yarn carrier coming from dyeing machine.

2 – DRYING : Drying process starts automatically after hydroextraction.

The air is blown by the blower through heat exchanger for heating, heated at preset temperature according to yarn type and colour shade, flows at high speed through the yarn I/O direction, thereby transferring heat to the yarn and saturating  with evaporated water . Duration of drying phase is preset on the base of air temperature at inlet and outlet of yarn packages

3 – YARN CONDITIONING : After the drying phase, air is circulated O/I direction in order to equalize residual humidity in yarn packages and reduce the temperature of the yarn.

ADVANTAGES:

1- No need of centrifuge hydro extractor. Loading and unloading is the waste time and also yarn packages may be damaged during loading /unloading.

2-Process time is 50% to 70% shorter due to closed loop.

3-Labour is dramatically reduced in the whole drying process.